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For 6 Sitka spruce (Picea sitchensis) plots with various thinning (no thinning or half trees and one-third of basal area removed) and fertilizer (cont...
Read moreA mechanistic physiological model for the growth of bracken has been developed which describes its yearly cycle in terms of three compartments: frond ...
Read moreEnchytraeids were sampled in 1980-85 in an agricultural field experiment with four cropping systems: barley without nitrogen fertilization (B0); barle...
Read more[Cf. FA 35, 7073] A general theory is presented which describes the interaction between radiation and a Spruce forest. The canopy is divided into a se...
Read moreThe experimental material (all of Queen Charlotte Islands provenance) consisted of seedlings grown for three months in growth chambers and detached sh...
Read moreAgropyron desertorum and A. spicatum [Elymus spicatus] were grown with Artemisia tridentata in field experiments near Logan during 1978-81. Plants of ...
Read moreAgroforestry can reduce risks and promote sustainable agricultural production under shifting climate and weather extremes by (1) reducing threats and ...
Read moreIn measurements made on a 45-yr-old stand at Thetford Forest, East Anglia, UK, from Mar. to Oct. 1976, the relative importance of atmospheric water va...
Read moreIn measurements made on a 45-yr-old stand at Thetford Forest, East Anglia, UK, from Mar. to Oct 1976, data on shoot conductance and photosynthesis wer...
Read moreVertical distribution of photosynthesis in crops of tobacco and sorghum was determined at intervals throughout the day using a portable chamber exposi...
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